chrome/browser/value_store/value_store_change.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/value_store/value_store_change.h"
   6
   7 #include "base/json/json_writer.h"
   8 #include "base/logging.h"
   9
  10 // static
  11 std::string ValueStoreChange::ToJson(
  12     const ValueStoreChangeList& changes) {
  13   DictionaryValue changes_value;
  14   for (ValueStoreChangeList::const_iterator it = changes.begin();
  15       it != changes.end(); ++it) {
  16     DictionaryValue* change_value = new DictionaryValue();
  17     if (it->old_value()) {
  18       change_value->Set("oldValue", it->old_value()->DeepCopy());
  19     }
  20     if (it->new_value()) {
  21       change_value->Set("newValue", it->new_value()->DeepCopy());
  22     }
  23     changes_value.SetWithoutPathExpansion(it->key(), change_value);
  24   }
  25   std::string json;
  26   base::JSONWriter::Write(&changes_value, &json);
  27   return json;
  28 }
  29
  30 ValueStoreChange::ValueStoreChange(
  31     const std::string& key, Value* old_value, Value* new_value)
  32     : inner_(new Inner(key, old_value, new_value)) {}
  33
  34 ValueStoreChange::~ValueStoreChange() {}
  35
  36 const std::string& ValueStoreChange::key() const {
  37   DCHECK(inner_.get());
  38   return inner_->key_;
  39 }
  40
  41 const Value* ValueStoreChange::old_value() const {
  42   DCHECK(inner_.get());
  43   return inner_->old_value_.get();
  44 }
  45
  46 const Value* ValueStoreChange::new_value() const {
  47   DCHECK(inner_.get());
  48   return inner_->new_value_.get();
  49 }
  50
  51 ValueStoreChange::Inner::Inner(
  52     const std::string& key, base::Value* old_value, base::Value* new_value)
  53     : key_(key), old_value_(old_value), new_value_(new_value) {}
  54
  55 ValueStoreChange::Inner::~Inner() {}